Malicious PDF — malware analysis report

Static analysis result for SHA-256 364442d7633ebc30…

MALICIOUS

PDF

39.6 KB Created: 2020-08-24 06:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6df96f8b48bdf07afe1ef99dab56e4a8 SHA-1: 0d964a34cc52cc21a849169b817ac9ffabbc5265 SHA-256: 364442d7633ebc3071977377f03f7fb29ee0343f825b78f2120945ebb9fe0974
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs. The presence of a 'download button' lure further supports a phishing or redirection attack pattern. No scripts were extracted, limiting the analysis of further stages.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=geospatial+revolution+answer+key
    • http://files.theculturedpearlofcharleston.com/uploads/1/3/1/1/131164324/3461455.pdf
    • http://levuxupu.asdarchitects.com/uploads/1/3/1/8/131856166/rudepadaxubabokelepo.pdf
    • http://bugonuve.japanesewarcrimesmalayaborneo.com/uploads/1/3/1/1/131164250/berodideredag.pdf
    • http://resosut.failurefarms.com/uploads/1/3/2/3/132302955/guxima-xezevisem-golexofodugo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5956/0086/files/causative_exercises_advanced_level.pdf
    • https://cdn.shopify.com/s/files/1/0438/1389/6352/files/90409560489.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kufotiniponekurek.pdf
    • https://cdn.shopify.com/s/files/1/0452/4094/2753/files/bennett_college_former_presidents.pdf
    • https://cdn.shopify.com/s/files/1/0450/1107/5222/files/zeburimozepazowef.pdf
    • https://cdn.shopify.com/s/files/1/0444/2108/7398/files/saxizivunotewamubum.pdf
    • https://cdn.shopify.com/s/files/1/0437/8502/7746/files/pafebirujaxejoxowotovu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9484/files/22247560294.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/11573184807.pdf
    • https://cdn.shopify.com/s/files/1/0431/7816/4387/files/xuzanebetugoxonevetego.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/dragon_age_inquisition_mage_skill_tree_guide.pdf
    • https://cdn.shopify.com/s/files/1/0454/3918/9142/files/35879370939.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ca4.bin
3a5820c437ffa3b0eeb21ecb7cf46ddcac3b9236f24febd5f9a09fd96a176015
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA4 5160 bytes
font_01_sfnt_off00006e63.bin
b24f42215a4aa944160da51eb239c997ac3a026270798f35e9d54011b2be4ef0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E63 10364 bytes